2215011668166 has 48 divisors (see below), whose sum is σ = 5243500014480. Its totient is φ = 670187722560.

The previous prime is 2215011668131. The next prime is 2215011668183. The reversal of 2215011668166 is 6618661105122.

2215011668166 is a `hidden beast` number, since 2 + 2 + 1 + 501 + 1 + 6 + 6 + 81 + 66 = 666.

2215011668166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2215011668166² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8436501 + ... + 8695088.

It is an arithmetic number, because the mean of its divisors is an integer number (109239583635).

Almost surely, 2^{2215011668166} is an apocalyptic number.

2215011668166 is an abundant number, since it is smaller than the sum of its proper divisors (3028488346314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2215011668166 is a wasteful number, since it uses less digits than its factorization.

2215011668166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17132261 (or 17132258 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 2215011668166 in words is "two trillion, two hundred fifteen billion, eleven million, six hundred sixty-eight thousand, one hundred sixty-six".